19 free calculators · No signup
Free grower calculators.
The same math Row Wise runs on autopilot, free to use by hand — cotton, grain sorghum, corn, and whole-farm tools.
Universal
Seeding Rate Calculator
Convert a target seeding rate to pounds per acre, in-row spacing and expected stand.
Grain Shrink Calculator
Convert wet bushels at harvest to dry bushels at market moisture, and see total shrink.
Spray Tank-Mix Calculator
Work out acres per tank, number of tanks, and product per tank for a mix.
Nitrogen Rate Calculator
Estimate a starting nitrogen rate from your yield goal, minus soil and previous-crop credits.
Break-Even Yield Calculator
Find the yield you need to cover your costs, and see profit or loss at your own yield estimate.
Crop Insurance APH Calculator
Estimate your APH, coverage guarantee, and whether this season is trending toward a claim.
Irrigation Water-Balance
Track soil moisture depletion against your trigger threshold to see when — and how much — to irrigate.
Replant Decision Calculator
Weigh a reduced stand's yield potential against a later replant's — in yield and in dollars.
GDD Accumulator (By ZIP)
Enter your ZIP code, crop and season start date to pull real accumulated growing degree days from historical weather — no manual daily log.
Frost Dates (By ZIP)
Enter your ZIP code to see the typical last spring frost, first fall frost, and average growing season length for your exact location, calculated from real historical weather.
Rainfall Accumulator (By ZIP)
Enter your ZIP code and a start date to see real accumulated rainfall for your exact location, pulled from historical weather data.
Extreme Heat Days (By ZIP)
Enter your ZIP code, a start date, and a heat threshold to count real extreme-heat days for your exact location, pulled from historical weather data.
Cotton
Cotton Yield Estimator
Estimate lint pounds and bales per acre from boll counts, boll size and gin turnout.
Cotton Heat Units (DD60)
Calculate cotton growing degree days (base 60°F) and track progress toward each stage.
Cotton Defoliation Timing
Check defoliation readiness from percent open bolls and nodes above cracked boll (NACB).
Cotton PGR (Mepiquat) Rate
Check plant vigor with height-to-node ratio (HNR) and get a starting mepiquat rate range by growth stage.